Which one of the following is a non-protoplasmic cell inclusion?
Correct answer: D. Cystoliths
- A. Ribosomes
- B. Mitochondria
- C. Lysosomes
- D. Cystoliths
Explanation
Cystoliths are non-protoplasmic cell inclusions found in certain plant cells. They are calcareous bodies composed of calcium carbonate. Cystoliths are not considered to be part of the protoplasm but rather are found in the extracellular space within specific plant tissues, such as leaves and stems.
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Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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